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One Sentence Summary
Kowalski, banned from inventing by Skipper, secretly invents an amazing device he cannot take credit for.
Despite Skipper forbidding him to invent, Kowalski defies him and constructs an invisibility ray, and he and Private are the only ones that know about it. Kowalski tests it on Fred's tree and Fred thinks he can fly and falls onto the ray causing it to become invisible; shortly, it also gets loose on the streets of New York because of King Julien's meddling, firing its laser randomly and rendering objects in the city(and Julien) invisible. The four penguins soon go on a mission to stop the device, Skipper believing Dr. Blowhole is behind the mayhem. The team manages to ram the unseen ray with a bus and Kowalski successfully defuses the device following a resulting overload. Objects once invisible, including the ray itself, become visible again. Kowalski tries to then say the ray was his, but Skipper thinks that Blowhole didn't use this ray, but believes it wasn't Kowalski's.
Airings on channels other than Nickelodeon USA